Hidden( Norwegian :Skjult) is a 2009 Norwegian psychological horror film written and directed by Pål Øie,which stars Kristoffer Joner , Karin Park and Bjarte Hjelmeland .
A small boy runs as fast as he can through a pitch-dark forest. Blinded by fear, the kid runs across a forest road without seeing the trailer truck coming. The truck misses the boy, with the driver starting to lose control of the vehicle. This triggers a chain reaction that leaves another boy without his family, who are killed when the trailer crashes into their car.
After his mother's death, KK (Kai Koss) returns to his hometown to settle her affairs. He has been away for 19 years, trying to escape and forget about his mother's cruel treatment of him. He soon realizes that he can't outrun his past. The film revolves around two boys, unknown to one another, yet a tragic accident brings them together.
The night of the accident was the night KK finally attempted to escape his mother's abuse and was running through the woods. At the same time, Peter's parents had pulled over to the side of the road for their young son to take a leak. While running from his mother, KK darts out onto a narrow road in front of an oncoming mack truck. The truck misses him but hits the car Peter's parents are in. After jumping out of the truck's way, KK is devastated, realizing he caused the accident. His eyes meet Peter's across the trees. Poor Peter stands there traumatized, as the flames eat away at his parents' bodies. KK then proceeds to escape his mother, who is chasing him.
Years later, he returns to deal with his mother's death and her deteriorating house. He had suppressed most of what happened that night. He finally remembers that when he jumped back into the woods out of the truck's way and stood there staring at Peter, he had witnessed his mother give up chasing him--only to grab Peter, as if to help him. KK now realizes that after his escape, his mother had another child to mentally & physically torment. She had thrown Peter's shoes by a huge waterfall to make the police think he ran off the cliff in the dark, then held young Peter captive for years. KK sees the shoes and realizes the shoestrings are tied exactly the way his mother had taught him to tie his shoes.
KK then remembers that in the forest, his evil mother had knelt down to help Peter tie his shoes while pretending to console him. The fact that KK caused the death of this missing boy's parents and ruined Peter's life was secondary to the fact that even worse: he kept his mouth shut about the missing boy's whereabouts and didn't even bother to go back to rescue Peter from his sick, abusive mother after all these years.
KK thought murdering Peter would be a better alternative than to let Peter suffer any longer in the state his evil mother left him in, nor would Peter have to pay for the monstrous crimes, with the police so close to realizing he still lives. With all this in play, it would also free KK from any guilt he suffered at having a hand, along with his mother, at ruining poor Peter's entire life.